"use strict";

/**
 * 
 * @desc 唯一ID生成器
 * @return {UUID} 
 */
function generateUUID() {
  var d = new Date().getTime();
  var uuid = "xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx".replace(/[xy]/g, function (c) {
    var r = (d + Math.random() * 16) % 16 | 0;
    d = Math.floor(d / 16);
    return (c === "x" ? r : r & 0x3 | 0x8).toString(16);
  });
  return uuid;
}

module.exports = generateUUID;